Rear-End Crashes Go Up After Red-Light Cameras Go In

IIHS has refused to release the study's raw data so that others may verify its conclusions, but Jim Kadison, a disarmingly sincere member of the National Motorists Association, went directly to SWITRS for crash data on the nine signalized Oxnard intersections used in the first IIHS study. He smelled something funny in IIHS's breakdown of crashes; just nine percent were rear-enders. Across the nation, it's about 40 percent, according to the National Highway Traffic Safety Administration.

Looking at the data, Kadison could reduce rear-enders down to a single-digit share only by narrowing the definition of intersection to "between crosswalks." Narrowing that way chops off the entire approach to the intersection, exactly where rear impacts happen. It looks like IIHS purposely designed its study to avoid seeing rear-enders.

Sure enough, when he opened the "intersection" to include crosswalks and 100 feet each side of them, rear crashes rose to a more normal share. Over this enlarged zone, rear-end crashes increased by 33 after red-light cameras were installed. At the same time, side impacts dropped 25 percent. Kadison concludes that the cameras merely trade one type of crash for another.

IIHS's claim of safety from cameras is flatly contradicted by a number of cities that have tried them. "At some intersections [with cameras] we saw no change at all, and at several intersections we actually saw an increase in traffic accidents," admitted San Diego police chief David Bejarano on ABC News's Nightline.

In Charlotte, North Carolina, station WBTV had this to say, "Three years, 125,000 tickets, and $6 million in fines later, the number of accidents at intersections in Charlotte has gone down less than one percent. And the number of rear-end accidents, which are much more common, has gone up 15 percent."

In Greensboro, the News & Record reports, "There has not been a drop in the number of accidents caused by red-light violations citywide since the first cameras were installed in February 2001. There were 95 such accidents in Greensboro in 2001, the same number as in 2000. And at the 18 intersections with cameras, the number of wrecks caused by red-light running has doubled."

The granddaddy of all studies, covering a 10-year period, was done for the Australian Road Research Board in 1995 (cameras went up in Melbourne in 1984). Photo enforcement "did not provide any reduction in accidents, rather there has been increases in rear end and [cross-street] accidents," wrote author David Andreassen in the page-one summary.

Red-light cameras turn out to be a very expensive way to crank up rear-end crashes. Motorists in Washington, D.C., alone pay a half-million dollars a month in fines. That's not enough, IIHS says. It wants points on driving records, too.